Membrane gas separation process with compressor interstage recycle
US6428606B1 · kind B1 · utility
19Cited by
32References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2001 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Mar 26, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B2203/0405
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for treating a gas stream containing an organic component and a second gas. The process uses at least two compression stages, followed by membrane separation, with recirculation of the membrane permeate streams to different points in the compression train. The process provides particular benefits for separations characterized by modest membrane selectivity and a high concentration of the organic component in the remaining gas the compression steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.